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annotate graal/com.oracle.graal.debug/src/com/oracle/graal/debug/internal/TimerImpl.java @ 11628:febd01be55e0

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moved 'conditional' field and related methods down in DebugValue
author Doug Simon <doug.simon@oracle.com>
date Fri, 13 Sep 2013 15:20:53 +0200
parents 0d10c6717edf
children a0da0bff042e
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1 /*
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2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.debug.internal;
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24
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25 import java.lang.management.*;
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26
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27 import com.oracle.graal.debug.*;
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28
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29 public final class TimerImpl extends DebugValue implements DebugTimer {
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30
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31 private static final ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
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32
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33 public static final TimerCloseable VOID_CLOSEABLE = new TimerCloseable() {
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34
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35 @Override
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36 public void close() {
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37 }
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38 };
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39
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40 /**
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41 * Records the most recent active timer.
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42 */
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43 private static ThreadLocal<AbstractTimer> currentTimer = new ThreadLocal<>();
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44
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45 public TimerImpl(String name, boolean conditional) {
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46 super(name, conditional);
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47 }
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48
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49 @Override
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50 public TimerCloseable start() {
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51 if (Debug.isTimeEnabled()) {
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52 long startTime;
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53 if (threadMXBean.isCurrentThreadCpuTimeSupported()) {
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54 startTime = threadMXBean.getCurrentThreadCpuTime();
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55 } else {
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56 startTime = System.nanoTime();
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57 }
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58
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59 AbstractTimer result;
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60 if (threadMXBean.isCurrentThreadCpuTimeSupported()) {
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61 result = new CpuTimeTimer(startTime);
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62 } else {
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63 result = new SystemNanosTimer(startTime);
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64 }
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65 currentTimer.set(result);
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66 return result;
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67 } else {
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68 return VOID_CLOSEABLE;
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69 }
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70 }
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71
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72 public static String valueToString(long value) {
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73 return String.format("%d.%d ms", value / 1000000, (value / 100000) % 10);
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74 }
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75
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76 @Override
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77 public String toString(long value) {
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78 return valueToString(value);
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79 }
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80
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81 private abstract class AbstractTimer implements TimerCloseable {
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82
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83 private final AbstractTimer parent;
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84 private final long startTime;
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85 private long nestedTimeToSubtract;
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86
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87 private AbstractTimer(long startTime) {
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88 this.parent = currentTimer.get();
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89 this.startTime = startTime;
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90 }
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91
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92 @Override
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93 public void close() {
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94 long endTime = currentTime();
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95 long timeSpan = endTime - startTime;
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96 if (parent != null) {
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97 parent.nestedTimeToSubtract += timeSpan;
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98 }
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99 currentTimer.set(parent);
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100 long flatTime = timeSpan - nestedTimeToSubtract;
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101 TimerImpl.this.addToCurrentValue(flatTime);
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102 }
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103
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104 protected abstract long currentTime();
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105 }
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106
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107 private final class SystemNanosTimer extends AbstractTimer {
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108
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109 public SystemNanosTimer(long startTime) {
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110 super(startTime);
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111 }
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112
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113 @Override
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114 protected long currentTime() {
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115 return System.nanoTime();
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116 }
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117 }
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118
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119 private final class CpuTimeTimer extends AbstractTimer {
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120
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121 public CpuTimeTimer(long startTime) {
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122 super(startTime);
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123 }
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124
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Gilles Duboscq <duboscq@ssw.jku.at>
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125 @Override
1706be855f0e Use ThreadMXBean to get CPU time instead of Wallclock time for Timers if possible
Gilles Duboscq <duboscq@ssw.jku.at>
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126 protected long currentTime() {
1706be855f0e Use ThreadMXBean to get CPU time instead of Wallclock time for Timers if possible
Gilles Duboscq <duboscq@ssw.jku.at>
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127 return threadMXBean.getCurrentThreadCpuTime();
1706be855f0e Use ThreadMXBean to get CPU time instead of Wallclock time for Timers if possible
Gilles Duboscq <duboscq@ssw.jku.at>
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128 }
1706be855f0e Use ThreadMXBean to get CPU time instead of Wallclock time for Timers if possible
Gilles Duboscq <duboscq@ssw.jku.at>
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129 }
4352
5a84f5548fc4 More work on new debug infrastructure.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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130 }